In a reflector antenna[?], the relative reduction in the effective aperture of the antenna caused by the masking effect of other antenna parts, such as a feed horn or a secondary reflector, which parts obstruct the radiation path.
... located at 40°56'40" North, 72°34'38" West (40.944347, -72.577131)1.
According to the United States Census Bureau, the town has a total area of 20.0 km² (7.7 ...